Piston pump

Details Piston pump Piston pump

1998-07-30

2000-07-04

Ryznic, John E.

Expansible chamber devices

With fluid purifying means

417313, F15B 2104, F04B 2300

Patent

active

060822449

ABSTRACT:
The invention relates to a piston pump having a piston that is axially displaceable in a bush. In order to keep the piston in the bush in a manner secured against loss, a tubular filter is secured to the bush in the extension thereof; the filter has a smaller inside diameter than the bush and in this way keeps the piston in the bush.

REFERENCES:
patent: 5320498 (1994-06-01), Fuchida
patent: 5540570 (1996-07-01), Schuller et al.
patent: 5562430 (1996-10-01), Schuller et al.

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